December is the an initial month that winter in the northern half of the world. In the southern half, that is the first month of summer.

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One the December’s birth flowers is the holly.

December is the twelfth and last month in the Gregorian calendar and also has 31 days. The December solstice ~ above December 21 or 22 marks the start of winter in the north Hemisphere.

Why Is December no the Tenth Month?

The an interpretation of December stems from the Latin indigenous decem, definition ten. The old roman calendar started in March, making December the tenth month. Once the roman senate adjusted the calendar in 153 BCE, the new year started in January, and also December came to be the twelfth month.

December Solstice

The December solstice on December 21 or 22 is also known as the winter solstice. The is the shortest day of the year in the northern Hemisphere and marks the beginning of the (astronomical) winter season there.

In the southerly Hemisphere, it is called the summer solstice. There, it is the longest work of the year and also the beginning of the (astronomical) summer season.

Christmas Eve and Christmas Day

Christmas method the Mass the Christ and is among the main holy days because that Christians. They think Jesus Christ was born on December 25, top top Christmas Day. The night prior to is well-known as Christmas Eve.

December was a month of celebration even prior to Christendom: In roman inn times, the mid-winter festival the Saturn was celebrated – the Saturnalia. It to be a time the feasting and also merry-making; even slaves and also their masters switched places for a while. The Saturnalia culminated v the winter solstice, which fell on December 25 in the roman calendar.


Evergreen holly leaves room symbols of brand-new life in winter – here as decoration on a classic fruit cake.

New Year’s Eve

As the last month that the year in the Gregorian calendar, December end with brand-new Year’s eve on December 31. Many people roughly the human being count down to the brand-new year and also celebrate with fireworks and also well-wishes. Although in countless other cultures, the new year starts on really different dates.

10 curious facts about brand-new Year

Astronomical events in December 2021

December 4, 2021Total Solar Eclipse: You’ll need to travel every the method to Antarctica to watch the full phase the this complete solar eclipse. Components of southerly Africa, including locations in southern Africa and also Namibia, will see a partial solar eclipse, if the weather permits.

December 4, 2021Super brand-new Moon: This brand-new Moon take away place very close come its perigee—the suggest on the Moon’s orbit closest to the Earth.

December 13/14, 2021Geminid Meteors: one of the year’s ideal meteor showers, the Geminids peak on the night that December 13 and early morning hrs of December 14, 2021, but will be visible from December 4-20.

December 19, 2021Micro full Moon / Cold Moon: The 2021 December complete Moon is a Micromoon—it occurs once the Moon is closest come its apogee. One of the classic names because that the full Moon in December is Cold Moon.

December 22/23, 2021Ursid Meteors: catch the shooting stars that the last significant meteor shower of the year, the Ursids, as soon as it peaks between the night of December 22 and also 23.

See all occasions in the Cosmic Calendar


The total solar eclipse in December 2021 will certainly be ideal seen native Antarctica.

History of December

In the old roman calendar, December was called mensis december, the tenth month, because the roman calendar started in March. December initially had 29 days.

In 154 BCE, a rebellion forced the roman senate to readjust the start of the civil year from March to January 1. Through this reform, December officially came to be the twelfth month in the year 153 BCE.

In the year 46 BCE, Julius Caesar introduced a brand-new calendar system—the Julian calendar. He included ten days to the year and introduced the leap day. In the new Julian calendar, December was broadened to 31 days.

Historical occasions in December

December 14, 1962 – first contact with one more planet. The American an are probe Mariner II travel 107 days until it passed Venus—at just 34,773 kilometres (21,607 mi) distance. Mariner II sent earlier measurements that Venus’ atmosphere and also temperature ~ above the planet’s surface.


Venus captured by NASA’s Mariner 10 spacecraft.

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December Birthstone and also Birth Flowers

According come tradition, the birthstones for December are the turquoise, the zircon, and the tanzanite. Its birth flowers space the holly and also the narcissus.

Zodiac indications in December

Topics: Calendar, History, December, Months

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